Speed and Velocity — Quiz Answers

Simon is riding a bike at 12 kilometers per hour away from his friend Keesha. He throws a ball at 5 kilometers per hour back to Keesha, who is standing still on a sidewalk. How fast would Keesha say the ball is traveling?

Rhea is running towards Sean and kicks a soccer ball to him. Sean is standing still. Which statement best describes the speed of the ball from Sean’s frame of reference and Rhea’s frame of reference?

Which statement is supported by the graph?

Which statement best describes Rosa’s error?

According to the graph, what is the motorcycle’s average velocity?

Xavier is roller skating at 14 kilometers per hour and tosses a set of keys forward on the ground at 8 kilometers per hour The speed of the keys relative to the ground is [Blank 1] km over h

Diego is playing basketball. While running at 7 kilometers per hour toward Gino, he passes the ball to Gino horizontally. The ball travels at 20 kilometers per hour relative to Diego. What is the speed of the ball relative to Gino?

Which three characteristics of an object are represented by a motion map?

Which best describes a reference frame?